Fig. 1.

Confocal microscopy images of 1 μm fluorescently labeled capsules with shells comprising of PLL and PGA without embedded proteins (A) or after incorporation of BMP₂ and TGFβ₁ and dissolution of the core: PLL-(PGA-PLL)₂-BMP₂-PLL-TGFβ₁-PLL^FITC (fluorescein isothiocyanate) (B). The hollow cross-section of the capsules is depicted. The Inset shows dispersed capsules.